Hamburger Steak

Name: Hamburger Steak
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American
Ingredients: 1 lb ground beef; 1 tsp sea salt; 1/4 tsp black pepper (omit for AIP); 1 tbsp avocado oil; 2 tbsp avocado oil; 1 yellow onion, thinly sliced; 2 cups mushrooms, sliced; 1 cup beef broth; 1 tbsp coconut aminos; 2 tsp mustard (omit for AIP); 2 tsp apple cider vinegar; 1 tsp dried thyme; 1/2 tsp sea salt; 1/4 tsp black pepper (omit for AIP); 2 tsp garlic powder; 2 tsp arrowroot starch; 1 tbsp chopped parsley, for topping